[oppetarkiv] Add new extractor

Some, if not all, of the videos appear to be geo-blocked (Sweden).
Test might fail (403 Forbidden) if not run through a Swedish connection.

youtube_dl/extractor/__init__.py

@@ -350,6 +350,7 @@
 from .oktoberfesttv import OktoberfestTVIE
 from .ooyala import OoyalaIE
 from .openfilm import OpenFilmIE
+from .oppetarkiv import OppetArkivIE
 from .orf import (
     ORFTVthekIE,
     ORFOE1IE,

youtube_dl/extractor/oppetarkiv.py

@@ -0,0 +1,56 @@
+# coding: utf-8
+from __future__ import unicode_literals
+
+from .common import InfoExtractor
+from ..utils import (
+    determine_ext,
+)
+
+
+class OppetArkivIE(InfoExtractor):
+    _VALID_URL = r'https?://(?:www\.)?oppetarkiv.se/video/(?P<id>[0-9]+)'
+    _TEST = {
+        'url': 'http://www.oppetarkiv.se/video/1058509/rederiet-sasong-1-avsnitt-1-av-318',
+        'md5': '7b95ca9bedeead63012b2d7c3992c28f',
+        'info_dict': {
+            'id': '1058509',
+            'ext': 'mp4',
+            'title': 'Farlig kryssning',
+            'duration': 2566,
+            'thumbnail': 're:^https?://.*[\.-]jpg$',
+        },
+    }
+
+    def _real_extract(self, url):
+        video_id = self._match_id(url)
+        info = self._download_json(
+            'http://www.oppetarkiv.se/video/%s?output=json' % video_id, video_id)
+
+        title = info['context']['title']
+        thumbnail = info['context'].get('thumbnailImage')
+
+        video_info = info['video']
+        formats = []
+        for vr in video_info['videoReferences']:
+            vurl = vr['url']
+            if determine_ext(vurl) == 'm3u8':
+                formats.extend(self._extract_m3u8_formats(
+                    vurl, video_id,
+                    ext='mp4', entry_protocol='m3u8_native',
+                    m3u8_id=vr.get('playerType')))
+            else:
+                formats.append({
+                    'format_id': vr.get('playerType'),
+                    'url': vurl,
+                })
+        self._sort_formats(formats)
+
+        duration = video_info.get('materialLength')
+
+        return {
+            'id': video_id,
+            'title': title,
+            'formats': formats,
+            'thumbnail': thumbnail,
+            'duration': duration,
+        }